fix(cms): use plain string healthcheck to avoid formatter conflict

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: hakalb

apps/cms/docker-compose.migrate.yml

@@ -12,7 +12,7 @@ services:
     networks:
       - migrate-test
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      test: pg_isready -U postgres
       interval: 2s
       timeout: 5s
       retries: 15